dotnet new blazor --interactivity Server
dotnet new blazor --interactivity WebAssembly
// ...
builder.Services.AddRazorComponents()
.AddInteractiveServerComponents();
// ...
app.MapRazorComponents<App>()
.AddInteractiveServerRenderMode(); // ...
builder.Services.AddRazorComponents()
.AddInteractiveWebAssemblyComponents();
// ...
app.MapRazorComponents<App>()
.AddInteractiveWebAssemblyRenderMode()
.AddAdditionalAssemblies(typeof(Counter).Assembly); 
<Project Sdk="Microsoft.NET.Sdk.BlazorWebAssembly">
<PropertyGroup>
<TargetFramework>net8.0</TargetFramework>
</PropertyGroup>
<ItemGroup>
<ProjectReference Include="..\BlazorDemoApp.Shared\BlazorDemoApp.Shared.csproj" />
</ItemGroup>
</Project> builder.Services.AddScoped<IProductStore, ProductStore>();
@using static Microsoft.AspNetCore.Components.Web.RenderMode // ... @using BlazorDemoApp.Client.Components.Store @using BlazorDemoApp.Client.Components
<RelatedProducts ProductId="ProductId" @rendermode="@InteractiveWebAssembly"/>
using BlazorDemoApp.Services;
using Microsoft.AspNetCore.Mvc;
namespace BlazorDemoApp.Controllers;
[ApiController]
[Route("/api/[controller]")]
public class ProductsController : ControllerBase
{
private readonly IProductStore _store;
public ProductsController(IProductStore store) => _store = store;
[HttpGet("[action]")]
public IActionResult Related([FromQuery] int productId) => Ok(_store.GetRelatedProducts(productId));
} builder.Services.AddControllers(); // ... app.MapControllers();
@using BlazorDemoApp.Shared.Models
@inject HttpClient Http
<button class="btn btn-outline-secondary" @onclick="LoadRelatedProducts">Related products</button>
@if (_loadRelatedProducts)
{
@if (_relatedProducts == null)
{
<p>Loading...</p>
}
else
{
<div class="mt-3">
@foreach (var item in _relatedProducts)
{
<a href="/ProductDetails/@item.Id">
<div class="col-sm">
<h5 class="mt-0">@item.Title (@item.Price.ToString("C"))</h5>
</div>
</a>
}
</div>
}
}
@code{
private IList<Product>? _relatedProducts;
private bool _loadRelatedProducts;
[Parameter]
public int ProductId { get; set; }
private async Task LoadRelatedProducts()
{
_loadRelatedProducts = true;
var uri = $"/api/products/related?productId={ProductId}";
_relatedProducts = await Http.GetFromJsonAsync<IList<Product>>(uri);
}
} System.InvalidOperationException: Cannot provide a value for property 'Http' on type 'RelatedProducts'. There is no registered service of type 'System.Net.Http.HttpClient'.
<RelatedProducts ProductId="ProductId" @rendermode="@InteractiveWebAssembly"/>
builder.Services.AddScoped(sp => new HttpClient
{
BaseAddress = new Uri("http://localhost/")
}); using BlazorDemoApp.Shared.Models;
namespace BlazorDemoApp.Shared.Data;
public interface IProductStore
{
IList<Product> GetAllProducts();
Product GetProduct(int id);
Task<IList<Product>?> GetRelatedProducts(int productId);
} public Task<IList<Product>?> GetRelatedProducts(int productId)
{
var product = ProductsDataSource.Single(x => x.Id == productId);
return Task.FromResult<IList<Product>?>(ProductsDataSource.Where(p => product.Related.Contains(p.Id))
.ToList());
} [HttpGet("[action]")]
public async Task<IActionResult> Related([FromQuery] int productId) =>
Ok(await _store.GetRelatedProducts(productId)); public class ClientProductStore : IProductStore
{
private readonly HttpClient _httpClient;
public ClientProductStore(HttpClient httpClient) => _httpClient = httpClient;
public IList<Product> GetAllProducts() => throw new NotImplementedException();
public Product GetProduct(int id) => throw new NotImplementedException();
public Task<IList<Product>?> GetRelatedProducts(int productId) =>
_httpClient.GetFromJsonAsync<IList<Product>>($"/api/products/related?productId={productId}");
} builder.Services.AddScoped<IProductStore, ClientProductStore>();
builder.Services.AddScoped(sp => new HttpClient { BaseAddress = new Uri(builder.HostEnvironment.BaseAddress) }); @inject IProductStore ProductStore
private async Task LoadRelatedProducts()
{
_loadRelatedProducts = true;
_relatedProducts = await ProductStore.GetRelatedProducts(ProductId);
} 
PdfShading shading = PdfShading.SimpleAxial(pdfWriter, x0, y0, x1, y1, BaseColor.YELLOW, BaseColor.RED);
PdfShadingPattern pattern = new PdfShadingPattern(shading);
ShadingColor color = new ShadingColor(pattern);
using System.Diagnostics;
using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;
namespace iTextSharpGradientTest
{
public class GradientCellEvent : IPdfPCellEvent
{
public void CellLayout(PdfPCell cell, Rectangle position, PdfContentByte[] canvases)
{
var cb = canvases[PdfPTable.BACKGROUNDCANVAS];
cb.SaveState();
var shading = PdfShading.SimpleAxial(
cb.PdfWriter,
position.Left, position.Top, position.Left, position.Bottom,
BaseColor.YELLOW, BaseColor.ORANGE);
var shadingPattern = new PdfShadingPattern(shading);
cb.SetShadingFill(shadingPattern);
cb.Rectangle(position.Left, position.Bottom, position.Width, position.Height);
cb.Fill();
cb.RestoreState();
}
}
class Program
{
static void Main(string[] args)
{
using (var pdfDoc = new Document(PageSize.A4))
{
var pdfWriter = PdfWriter.GetInstance(pdfDoc, new FileStream("Test.pdf", FileMode.Create));
pdfDoc.Open();
var table1 = new PdfPTable(1);
table1.HeaderRows = 2;
table1.FooterRows = 1;
//header row
var headerCell = new PdfPCell(new Phrase("header"))
{
HorizontalAlignment = Element.ALIGN_CENTER,
Border = 0
};
headerCell.CellEvent = new GradientCellEvent();
table1.AddCell(headerCell);
//footer row
var footerCell = new PdfPCell(new Phrase("footer"))
{
HorizontalAlignment = Element.ALIGN_CENTER,
Border = 0
};
footerCell.CellEvent = new GradientCellEvent();
table1.AddCell(footerCell);
//adding some rows
for (int i = 0; i < 70; i++)
{
var rowCell = new PdfPCell(new Phrase("Row " + i)) { BorderColor = BaseColor.LIGHT_GRAY };
table1.AddCell(rowCell);
}
pdfDoc.Add(table1);
}
//open the final file with adobe reader for instance.
Process.Start("Test.pdf");
}
}
}
با اجرای این کوئری خاص به همراه AsNoTrackingWithIdentityResolution خطای زیر مشاهده می‌شود و اصلا کار نمی‌کند (چون فیلد JSON هم دارد):
System.InvalidOperationException: Invalid token type: 'StartObject'.
در EF-Core و در طی طول عمر «یک» Context:
بنابراین وجود AsNoTrackingWithIdentityResolution فقط در طی طول عمر یک Conetxt و برای کاهش سربار نمونه سازی اشیاء مشابه با IDهای یکسان کوئری‌های آن Context ارزشمند است و اگر Context شما از چندین کوئری مشابه تشکیل نمی‌شود، عملا کار بیشتری را انجام نمی‌دهد و تفاوتی با AsNoTracking ندارد.
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